PGI compiler with -Minfo=accel flag

I have a very large CFD code with various fortran files in it. I am using a make file to compile all my files. I have specified pgf90 compiler for my fortran files with -acc and -Minfo=accel flag. But when i am running my make file there is no feedback from the compiler for my acc directives that i am using. But the code is running completely with correct results. I am using
!$acc kernels
c do loop
!$acc end kernels
But alternatively when i compile a single fortran file i with basic code in it like to calculate the sum of two arrays, i am getting feedback from compiler like the loop is parallelizable and data copyin and copyout stuff.